Alexander Shoshin created FLINK-5159:
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Summary: Improve perfomance of inner joins with a single row input
Key: FLINK-5159
URL: https://issues.apache.org/jira/browse/FLINK-5159
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Alexander Shoshin
Assignee: Alexander Shoshin
Priority: Minor
All inner joins (including a cross join) can be implemented as a
{{MapFunction}} if one of their inputs is a single row. This row can be passed
to a {{MapFunction}} as a {{BroadcastSet}}.
This approach is going to be more lightweight than the other current strategies.
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